MSCT和MRI在鉴别隐性骨折中的作用

Diagnostic value of MSCT and MRI for identifying occult bone fracture

目的:探讨骨隐性骨折的CT、MRI诊断价值。方法:对80例X线平片阴性的外伤患者,再次行CT及MRI检查,伤部位涉及长短壮骨及扁骨及不规骨。结果:CT检查出异常病例30例,可见骨小梁结构较乱,周围软组织肿胀;MRI检查出异常病例50例。显示隐性骨折呈现长T1、短T2或不规则状线形异常信号,其周围可见不规则长T2骨挫伤水肿异常高信号影,均伴有周围软组织水肿的异常信号。结论:X线平片虽为外伤性骨折的基本检查方法,但易漏诊,而CT及MRI可提高隐匿性骨折检出率。尤其是MRI能早期诊断骨隐性骨折,若患者局部症状明显,X线检查无阳性征象者应行CT或MRI检查。

Objective To evaluate the value of MSCT and MR/ scanning in the diagnosis of occult fracture. Method Eighty patients who experienced traumas with obvious clinical symptoms and negative X - ray findings, were accepted MSCT and MR/ examina- tions. Results Thirty patients were detected occult fracture by MSCT,with disorganized bone trabecula and swelling soft tissues. Fifty eases were diagnosed occult fracture by MR/scanning, with abnormal linear signal intensity presented with a long T1 and a short T＇2. The soft tis- sues injuries and bone contusion were also detected. Conclusion Compared with radiographic findings ,MSCT and MR/are the better meth- ods to diagnose occult fracture,which can avoid the misdiagnosis and the missed diagnosis of occult fractures to a great extent.